[7.x](backport #26746) Upgrade PyYAML test dependency to 5.4.1#26769

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adriansr merged 1 commit into7.xfrom mergify/bp/7.x/pr-26746

Jul 9, 2021

+1-1

Commits on Jul 7, 2021

Upgrade PyYAML dependency used for tests (#26746 )

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